500 Series

• In 500 modular construction
• English-style EQ consoles similar to the 1081 and 33115 vintage devices
• Treble and bass shelf
• Treble is set at 12k, while Bass allows you to choose between 50 and 100 Hz
• Hi and Lo Mid +/- 18 db with Hi and Lo "Q" switching per band
• Inductor based English style with 7 choices per band
• Three positions for filters 47, 82 and 150 Hz
• "hardwire" bypass
• Construction: API Series 500 Rack Format

• Coupled transformer with symmetric inputs and outputs
• Passive EQ in Pultec style
• Hybrid gain make-up amplifier
• 3-Step switched EQ low frequency boost 30 Hz, 60 Hz, 100 Hz +/-10%
• 3-Step switched EQ high frequency boost 6 kHz, 10 kHz, 16 kHz +/-10%
• 3-Step switched EQ high frequency attenuation 10 kHz, 15 kHz, 20 kHz +/-10%
• True hardwire EQ bypass
• Design: API Series 500 format

• With Colour function for tube-like sound
• Discrete operational amplifier OPA2
• Gain control from -14 dB to +14 dB
• Low frequencies steplessly adjustable from 30 to 300 Hz
• Middle frequencies steplessly adjustable from 300 to 3,000 Hz
• High frequencies steplessly adjustable from 2,000 to 20,000 Hz
• Shelf and bell function
• LED Display for output peak level (+20 dB)
• LED Display for output level (>-30 dB)
• Bypass switch
• Design: 500 Series module

• Streams audio signals from a mobile iOS or Android device and provides a balanced audio signal with +22 dBu
• Wireless integration of smartphones or tablets in studio environment for playing reference tracks via iTunes or Spotify, emailed recordings, YouTube integration, etc.
• Burr Brown output stage
• Automatic detection of the optimal audio codec (AAC, APTX, SBC)
• Dimensions (H x W x D): 133.4 x 38.1 x 150.9 mm
• 1 x 500 series plug-in unit
• Includes adapter for stereo operation

• Can be used as a stereo (L / R) or M / S insert
• Additional dry / wet controller for parallel processing
• Listening matrix, which offers the best control for M / S editing
• Stereo base control, with which the signal based on M / S technology can be influenced in its breadth
• Input impedance:> 20 kOhm
• Output impedance: 50 Ohms
• Max. Level: +26 dBu
• Reference level: +6 dBu / + 4 dBu
• Power supply: +/- 15 ... 17 V,
• 500 Zähl rack with at least 2 empty slots is additionally required
• If you are using a standard 500 rack, you will need an extra slot for the included panel with 4 XLR slots

• Two separately adjustable headphone outputs, each with their own separate amplifier stages
• Phase reversal of L and R channels, as well as stereo / mono / mute switching
• Electronically balanced
• Impedance: 10 kOhm
• Max. input level: +21 dBu
• Max. output level: +18 dBu @ 600 ohm, +15 dBu @ 300 ohm, +5 dBu @ 32 ohm
• Frequency range: 10 - 10,000 Hz
• Noise floor: -92.3 dBu (A-weighted)
• Total harmonic distortion (THD): 0.00024% (at an output level of 0 dBu and 600 ohm)
• 0 dBu = 0.775 V
• Dual slot 500 series rack module
• Weight: 0.8 kg

• The 500 series
• 65 dB gain
• Microphone input on the front and back
• Line / instrument input jack
• 20 dB pad-switch
• 48V phantom and phase switchable
• LED-VU meter
• Lownoise preamp (-129dB)
• Circuit design with the API2510 and 2520 operational amplifiers
• Requires API Lunchbox 500-6B or 500VPR 10Slot rack

• +60 dB gain
• Switchable +48V phantom power
• Phase switchable
• Input switchable between Mic / Line
• Input impedance switchable between 1200 and 300 ohms
• Max. Current consumption: + 16v @ 110mA / -16v @ 80ma
• Format: 500 module

• Uses the discrete operational amplifiers 2510 and 2520
• Controllable Threshold, Attack, Release, Ratio and Output
• 10 segement VU-Gain-Reductionpeak Meter
• LinkSwitch
• Switchable feed-forward or feedback compression
• THRUST switch for frequency dependent Sideschain
• Trafosym. exit
• Hardware bypass
• Requires API Lunchbox 500-6B or 500VPR 10 Slot Rack

• 500 module
• Parallel compression
• Side-chain filter: OFF, 60, 90, 120, 180, 240 Hz
• 4 dB operating level
• Max. +21 dBu output
• Max. 20 dB gain
• Max. 20 dB gain reduction
• Noise level dBA: -102 dB
• Controls for threshold, out, mix, attack
• Side-chain HPF
• VU meter
• Design: 500 module

Roger Schult W2359j amp4ribbon; 1-channel ribbon microphone preamplifier; continuously adjustable preamplification from 26 dB to 59 dB; switchable attenuation 15 dB activatable via push switch (opt. -20 dB pad); impedance control 150 Ohms to 22 kOhm; LF eq / high-pass filter 0 to -17 dB control range at 20 Hz; Mid eq 155 Hz - 3.5 kHz, +/- 10 dB; quality 0.4 and 0.7 fixed and 2.4 - 4 adjustable; HF eq by Baxandall tone control +/- 12 dB at 9 kHz; bypass function; +48V phantom power switchable; Format: 500 Series Module; mounts in 1 space in a "500" rack

• With Vari-phase, Silk and DI / mic blend
• Frequency range: Main output, no load, -0.2 dB @ 10 Hz -3 dB @ 160 kHz
• Noise: measured at main output, unweighted, 22 Hz-22 kHz
• Microphone gain up to 66 dB
• DI gain from 0db to 30dB
• Maximum Output Level: from 20 Hz to 40 kHz +23 dBu
• Total harmonic distortion and noise: @ 1 kHz, + 20 dBu output: Main Output: better than 0.001% at 20 Hz, +20 dBu Output: Main Output: better than 0.002% Silk activated: better than 0.2% Second Harmonic
• Crosstalk (measured from channel to channel): better than -90 dB @ 15 kHz
• Phantom Power: +48 Volts DC +/- 1%
• Construction: API Series 500 rack format

• For 500 Series module frames
• Colour: Black

• API 500 Format
• Tape saturation emulator
• Trim control (+/-12 dB PreTape Level Control)
• Tape saturation effect can be set in a ·stepless manner
• Silk function (Silk Red & Silk Blue) can be set in a ·stepless manner
• Blend potentiometer determines the balance of Pre and Post-Tape signals
• The tape characteristic can be switched between 15 IPS and 30 IPS
• Drive Meter shows the Signal Level on the "Record Headf"
• Enclosure: API Serie 500 Rack Format

• Max. 69 dB gain
• Totally discrete circuit design with 2520 op-amp
• Proprietary AP2516 input transformer
• 20 dB Pad switch
• Switchable 48 V phantom power
• VU Meter
• Peak LED
• Design: 500 Series module

• In the 500 module format
• Microphone and DI input for instruments
• Reinforcement: max. + 65 db
• +48 V phantom power can be switched on
• Switchable pad: 0 dB, -15 dB, -25 dB
• Selected 12AX7 double triode with "Dual Gain Stage" circuitry
• High-pass filter: at 90 Hz with 24 dB / octave slope
• Frequency response: 6 Hz to 80 kHz
• Input transformer: Lundahl LL1576 (Mu metal shielded)
• Output transformer: Lundahl LL1585 (Mu metal shielded)
• Power Consumption: 100 mA
• Automatically back-up fuse